Since A (3,4) A’(9,12)
You can see 3*3=9
Therefor it was enlarged by 3times
Scale factor of 3
<u>Answer</u>
c. 62/95
<u>Explanation</u>
Probability is the chance of an event happening.
Probability = (favorable outcome)/(total outcome)
P(girl) = 12/20 × 11/19
= (12×11)/(20×19)
= 132/380
= 33/95
P( not a girl) = 1 - 33/95
= 62/95
Answer:
x= -20, y= 10
Step-by-step explanation:
Label the two equations:
-7x -10y= 40 -----(1)
x= -2y -----(2)
Substitute (2) into (1):
-7(-2y) -10y= 40
Expand:
14y -10y= 40
Simplify:
4y= 40
Divide both sides by 4:
y= 40 ÷4
y= 10
Substitute y= 10 into (2):
x= -2y
x= -2(10)
x= -20
Answer:
-3/4
Step-by-step explanation:
Write in y = mx + b form
4y = -3x + 8
y = -3/4x + 2
Find the m value.
m = -3/4
A linear function represents a line, a quadratic function represents a parabola.
The dots fit a parabolic behaviour (they are descendent at the beginning, they reach a minimum and then start growing again), so a quadratic model could fit the dots much better than a linear one.
